It's not know exactly what we can expect from Sony at this year's Mobile World Congress but one this is for sure; it will be unveiling an update to its popular, superthin tablet line in the shape of the Sony Xperia Z4 Tablet.

We know this for sure because Sony itself has accidentally spilled the beans. The official Xperia Lounge application published a pic and some of the details of the top secret device before realising its mistake and quickly taking it down again.

That doesn't stop eagle-eyed fans though, one of which, Fredrik, being a reader of Xperia Blog who managed to grab a screenshot first.

As well as a picture of the tablet - which looks incredibly thin - the details underneath reveal that it will have an "ultra fast processor", "industry leading battery performance", and will have a 2K display. That means a pixel resolution of 2048 x 1536.

Other specifications are yet to be revealed, thankfully for Sony, so at least there will be something new to announce during the 2 March press event at MWC.

And looking at the date under the tablet posting, it could even be that the device will be available to buy from the next day. Either that or that's when the posting was meant to actually meant to appear.